CN110894560A - Novel equidistant punching machine for belt leather - Google Patents
Novel equidistant punching machine for belt leather Download PDFInfo
- Publication number
- CN110894560A CN110894560A CN201911254581.0A CN201911254581A CN110894560A CN 110894560 A CN110894560 A CN 110894560A CN 201911254581 A CN201911254581 A CN 201911254581A CN 110894560 A CN110894560 A CN 110894560A
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- plate
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- hinged
- cylinder
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- 238000004080 punching Methods 0.000 title claims abstract description 60
- 239000010985 leather Substances 0.000 title claims abstract description 45
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 239000004677 Nylon Substances 0.000 claims description 10
- 229920001778 nylon Polymers 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B5/00—Clicking, perforating, or cutting leather
- C14B5/04—Clicking, perforating, or cutting leather for making leather belts or strips
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
- C14B17/06—Work feeding or clamping devices
- C14B17/08—Fastening devices, e.g. clips for leather-stretching
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a novel equidistant punching machine for belt-shaped leather, which comprises a step bottom plate for placing the belt-shaped leather, wherein a fixed hinge seat is fixed at the rear end of the step bottom plate, the right sides of two first short telescopic arms hinged on the fixed hinge seat are connected with a plurality of punching assemblies, the right sides of the punching assemblies are hinged with second short telescopic arms hinged on a movable hinge seat, and the movable hinge seat is connected with the step bottom plate through bolts and nuts; two ends of the step bottom plate are provided with clamping mechanisms for clamping two end parts of the belt, and the clamping mechanism on the left side can move up and down. The invention can punch a plurality of small holes with equal intervals at one time, can change the distance between two adjacent punches by adjusting the position of the movable hinged seat, and can position and fix the belt-shaped leather, thereby effectively improving the punching efficiency.
Description
The technical field is as follows:
the invention relates to the technical field of punching machines, in particular to a novel equidistant punching machine for belt-shaped leather.
Background art:
at present, the common belt-shaped leather is punched by manual operation, one belt-shaped leather is punched, and the positions of the punched holes are determined by a ruler before punching, so that the punching method is low in efficiency, and the labor intensity of workers is high.
The invention content is as follows:
the invention aims to overcome the defects of the prior art and provide a novel equidistant punching machine for strip leather, which can punch a plurality of equidistant small holes at one time, change the distance between two adjacent punches by adjusting the position of a movable hinged seat, position and fix the strip leather and effectively improve the punching efficiency.
The scheme for solving the technical problems is as follows:
a novel equidistant punching machine for belt leather comprises a step bottom plate with a low front part and a high back part, wherein a fixed hinged seat is fixed at the left end of the back end surface of the step bottom plate, two first short telescopic arms are hinged on the fixed hinged seat, a plurality of punching assemblies linearly and uniformly distributed in the left-right direction are arranged at the right sides of the two first short telescopic arms, each punching assembly comprises a vertically arranged punch, a round rod is formed at the upper end of each punch, the round rod is inserted in a core sleeve, a top table is fixed at the upper extending end of the round rod penetrating through the core sleeve, a pressure spring is arranged between the top table and the upper end surface of the core sleeve and sleeved on the round rod, the core sleeve is hinged at the middle parts of the two long telescopic arms which are arranged in a crossed manner, the left ends of the two long telescopic arms of the leftmost punching assembly are respectively hinged with the outer ends of the two first short telescopic arms, the left ends of the two long telescopic arms of the middle punching assembly are hinged with the right ends of the two, the right ends of two long telescopic arms of the middle punching assembly are hinged with the left ends of two long telescopic arms of the adjacent right punching assembly, the right ends of two long telescopic arms of the rightmost punching assembly are respectively hinged with the outer ends of two second short telescopic arms, the inner ends of the two second short telescopic arms are hinged on a movable hinge seat capable of moving left and right, two bolt through holes are formed in the movable hinge seat, a waist-shaped step hole with a larger lower part and a smaller upper part is formed at the right end of the rear end face of the step bottom plate, two first bolts are sleeved in the waist-shaped step hole, the screw section of each first bolt penetrates through the end part of the waist-shaped step hole and is inserted and sleeved in a corresponding bolt through hole, the extending end of the screw section of the first bolt penetrating through the bolt through hole is connected with a nut in a threaded manner, an oil cylinder support is fixed at the rear end of the step bottom plate, an oil cylinder is fixed on the oil cylinder support, and, the pressing plate is positioned right above the top platforms of the punching assemblies, the front end surface of the step bottom plate is used for placing the strip leather to be punched, and the strip leather is positioned right below the punches of the punching assemblies; the left side wall of the step bottom plate is fixedly provided with two first support lugs arranged in the front and back direction, a first cylinder is hinged between the two first support lugs, the right side wall of the step bottom plate is fixedly provided with two second support lugs arranged in the front and back direction, a second cylinder is hinged between the two second support lugs, the lower bottom surface of the step bottom plate is fixedly provided with a first right-angle support plate and a second right-angle support plate which are arranged in the bilateral symmetry direction, the outer side of the first right-angle support plate is provided with an Jiong-shaped frame, two threaded through holes arranged in the front and back direction are formed in the right side wall of the Jiong-shaped frame, two waist-shaped grooves extending in the vertical direction and corresponding to the two threaded through holes one by one are formed in a vertical plate of the first right-angle support plate, each waist-shaped groove is sleeved with a second bolt, and the screw section of the second bolt penetrates through the end part of the; a first clamping plate is arranged on the outer side of the Jiong-shaped frame, the rear end of the first clamping plate is fixed on a piston rod of a double-rod cylinder, and the double-rod cylinder is fixedly connected with the Jiong-shaped frame; the left end of the belt leather is wound around the lower end of the first cylinder and is arranged between the clamping plate and the left side wall of the Jiong-shaped frame; a baffle is fixed on the outer edge of the second right-angle support plate, a second clamping plate is arranged on the left side of the baffle and fixed on a piston rod of a second cylinder, and the second cylinder is fixed on a vertical plate of the second right-angle support plate; the right end of the banded leather is arranged between the second clamping plate and the baffle plate by bypassing the lower end of the second cylinder.
The lower end of the punch is formed with a cone part and a chip hole with an opening at the lower side, and the outer wall of the punch is formed with a chip outlet hole communicated with the chip hole.
A support lug is fixed on the side wall of the oil cylinder support, a guide rod is sleeved on the support lug, and the lower end of the guide rod is fixed on the pressing plate.
The lower side of banded leather is equipped with on the nylon board, and the nylon board bonds on the preceding terminal surface of step bottom plate, the last bottom surface of nylon board is tangent with the top of second cylinder, the top of first cylinder.
The lower end of the left side wall of the Jiong-shaped frame is fixed with a positioning plate which is positioned below the first clamping plate, and the first clamping plate is pressed against the positioning plate.
The invention has the following outstanding effects: compared with the prior art, it can once dash out a plurality of equidistant apertures, and can change the distance between two adjacent drifts through the position of adjusting the articulated seat of activity, can fix a position and fix banded leather simultaneously, has effectively improved punching efficiency.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2 taken about A-A;
FIG. 4 is a cross-sectional view of FIG. 2 taken about B-B;
fig. 5 is a cross-sectional view of fig. 2 taken about C-C.
The specific implementation mode is as follows:
in the embodiment, as shown in fig. 1 to 5, a novel equidistant punching machine for belt-shaped leather comprises a step base plate 1 with a lower front end and a higher rear end, a fixed hinged seat 2 is fixed at the left end of the rear end surface of the step base plate 1, two first short telescopic arms 3 are hinged on the fixed hinged seat 2, a plurality of punching assemblies 4 linearly and uniformly distributed in the left-right direction are arranged at the right sides of the two first short telescopic arms 3, each punching assembly 4 comprises a vertically arranged punch 41, a round rod 411 is formed at the upper end of the punch 41, the round rod 411 is inserted and sleeved in a core sleeve 42, a top table 43 is fixed at the upper extending end of the round rod 411 passing through the core sleeve 42, a compression spring 44 is arranged between the top table 43 and the upper end surface of the core sleeve 42, the compression spring 44 is sleeved on the round rod 411, the core sleeve 42 is hinged at the middle of two long telescopic arms 45 arranged crosswise, the left ends of the two long telescopic arms 45 of the leftmost punching assembly 4 are respectively hinged with the outer ends of the two first short, the left ends of the two long telescopic arms 45 of the middle punching assembly 4 are hinged with the right ends of the two long telescopic arms 45 of the left punching assembly 4 adjacent to the middle punching assembly 4, the right ends of the two long telescopic arms 45 of the middle punching assembly 4 are hinged with the left ends of the two long telescopic arms 45 of the right punching assembly 4 adjacent to the middle punching assembly 4, the right ends of the two long telescopic arms 45 of the rightmost punching assembly 4 are respectively hinged with the outer ends of the two second short telescopic arms 5, the inner ends of the two second short telescopic arms 5 are hinged on a movable hinge seat 6 capable of moving left and right, two bolt through holes 601 are formed on the movable hinge seat 6, a waist-shaped step hole 101 with a large lower part and a small upper part is formed at the right end of the rear end face of the step bottom plate 1, two first bolts 7 are sleeved in the waist-shaped step hole 101, and the screw section of each first bolt 7 passes through the end part of the waist-shaped step hole 101 and is inserted and, a screw section of the first bolt 7 penetrates through an extending end of the bolt through hole 601 and is in threaded connection with a nut 8, an oil cylinder support 9 is fixed at the rear end of the step bottom plate 1, an oil cylinder 10 is fixed on the oil cylinder support 9, a pressing plate 11 is fixed on a piston rod of the oil cylinder 10, the pressing plate 11 is located right above top tables 43 of the punching assemblies 4, the front end face of the step bottom plate 1 is used for placing strip-shaped leather 12 to be punched, and the strip-shaped leather 12 is located right below punches 41 of the punching assemblies 4; two first lugs 13 which are arranged in the front and back are fixed on the left side wall of the step bottom plate 1, a first cylinder 14 is hinged between the two first lugs 13, two second lugs 15 which are arranged in the front and back are fixed on the right side wall of the step bottom plate 1, a second cylinder 16 is hinged between the two second lugs 15, a first right-angle support plate 17 and a second right-angle support plate 18 which are arranged in bilateral symmetry are fixed on the lower bottom surface of the step bottom plate 1, the outer side of the first right-angle support plate 17 is provided with an Jiong-shaped frame 19, the right side wall of the Jiong-shaped frame 19 is provided with two threaded through holes 191 which are arranged in front and back, two waist-shaped grooves 171 which extend in the vertical direction and correspond to the two threaded through holes 191 one by one are formed in the vertical plate of the first right-angle support plate 17, a second bolt 20 is sleeved in each waist-shaped groove 171, and the screw section of each second bolt 20 penetrates through the end part of each waist-shaped groove 171 and is screwed in the threaded through hole 191; a first clamping plate 21 is arranged on the outer side of the Jiong-shaped frame 19, the rear end of the first clamping plate 21 is fixed on a piston rod of a double-rod cylinder 22, and the double-rod cylinder 22 is fixedly connected with the Jiong-shaped frame 19; the left end of the belt-like leather 12 is passed around the lower end of the first cylinder 14 and placed between the clamping plate 21 and the left side wall of the "Jiong" shaped frame 19; a baffle plate 23 is fixed on the outer edge of the second right-angle support plate 18, a second clamping plate 24 is arranged on the left side of the baffle plate 23, the second clamping plate 24 is fixed on a piston rod of a second cylinder 25, and the second cylinder 25 is fixed on a vertical plate of the second right-angle support plate 18; the right end of the belt-like leather 12 is placed between the second nip plate 24 and the retainer plate 23 around the lower end of the second cylinder 16.
Further, a tapered portion 412 and a chip hole 413 opened at the lower side are formed at the lower end of the punch 41, and a chip hole 414 communicating with the chip hole 413 is formed on the outer wall of the punch 41.
Furthermore, a support lug 26 is fixed on the side wall of the oil cylinder support 9, a guide rod 27 is sleeved on the support lug 26, and the lower end of the guide rod 27 is fixed on the pressure plate 11.
Further, the lower side of the belt-shaped leather 12 is provided with a nylon plate 28, the nylon plate 28 is adhered to the front end surface of the step floor 1, and the upper bottom surface of the nylon plate 28 is tangent to the uppermost end of the second cylinder 16 and the uppermost end of the first cylinder 14.
Furthermore, a positioning plate 29 is fixed to the lower end of the left side wall of the Jiong-shaped frame 19, the positioning plate 29 is positioned below the first clamping plate 21, and the first clamping plate 21 is pressed against the positioning plate 29.
The working principle is as follows: firstly, a nylon plate 15 is arranged on the lower side of a belt-shaped leather 12, the belt-shaped leather 12 is positioned right below a punch 41, the left end of the belt-shaped leather 12 is pressed on a positioning plate 29 by bypassing the end part of a first cylinder 14, then a piston rod of a double-rod cylinder 29 is contracted, the left end part of the belt-shaped leather 12 is clamped between a clamping plate 21 and the left side wall of a Jiong-shaped frame 19, the right end of the belt-shaped leather 12 is placed between a second clamping plate 24 and a baffle plate 23 by bypassing the end part of a second cylinder 16, then the piston rod of a second cylinder 25 is expanded, and the right end of the belt-shaped leather 12 is clamped between the second clamping plate 24 and the baffle plate 23, so that the positioning and the fixing of the; secondly, the piston rod of the oil cylinder 10 extends to drive the pressing plate 11 to move downwards, the pressing plate 11 pushes the top platforms 43 of the plurality of punching assemblies 4 downwards, the top platforms drive the punch 41 to move downwards, the pressure spring 44 is further compressed, the punch 41 moves downwards, the lower end of the punch is inserted into the belt-shaped leather 12, so that punching is performed, chips left in the punching process from the belt-shaped leather 12 are left in the chip hole 413, and when the next punching process is performed again, the chips left in the chip hole 413 are extruded from the chip outlet hole 414 due to the extrusion of the following chips; thirdly, the piston rod of the oil cylinder 10 contracts, the pressing plate 11 moves upwards, the punch 41 is driven to move upwards under the action of the spring 44, and the punch 41 moves upwards to separate from the belt-shaped leather, so that the punching work of the belt-shaped leather is completed; fourthly, the first nut 8 is unscrewed, the movable hinge seat 6 can slide on the waist-shaped step hole 101, and the movable hinge seat 6 can drive the punch of the punching assembly 4 to move left and right, so that the distance between two adjacent punches 41 is adjusted, and the nut 8 is locked after adjustment; fifthly, the position of the Jiong-shaped frame 19 can be adjusted by loosening the second bolt 20, so as to drive the left end part of the belt-shaped leather 12 to move upwards or downwards, and the second bolt 20 is screwed again after the position is adjusted, so as to change the punching position of the belt-shaped leather.
Finally, the above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (5)
1. The utility model provides a high step bottom plate (1) in preceding low back, its characterized in that are used to banded leather to novel equidistant piercing press, including: the left end of the rear end face of the step bottom plate (1) is fixedly provided with a fixed hinged seat (2), the fixed hinged seat (2) is hinged with two first short telescopic arms (3), the right sides of the two first short telescopic arms (3) are provided with a plurality of punching assemblies (4) which are linearly and uniformly distributed in the left-right direction, each punching assembly (4) comprises a vertically arranged punch (41), a round rod (411) is formed at the upper end of each punch (41), each round rod (411) is inserted and sleeved in a core sleeve (42), a top table (43) is fixed at the upper extending end of each round rod (411) penetrating through the core sleeve (42), a pressure spring (44) is arranged between the top table (43) and the upper end face of each core sleeve (42), each pressure spring (44) is sleeved on each round rod (411), each core sleeve (42) is hinged to the middle of the two long telescopic arms (45) which are arranged in a crossed mode, the left ends of the two long telescopic arms (45) of the leftmost punching assembly (4) are respectively hinged to the outer ends of the two first short telescopic, the left ends of two long telescopic arms (45) of a middle punching assembly (4) are hinged with the right ends of two long telescopic arms (45) of a left side punching assembly (4) adjacent to the middle punching assembly, the right ends of two long telescopic arms (45) of the middle punching assembly (4) are hinged with the left ends of two long telescopic arms (45) of a right side punching assembly (4) adjacent to the middle punching assembly, the right ends of two long telescopic arms (45) of the rightmost punching assembly (4) are respectively hinged with the outer ends of two second short telescopic arms (5), the inner ends of the two second short telescopic arms (5) are hinged on a movable hinge seat (6) capable of moving left and right, two bolt through holes (601) are formed in the movable hinge seat (6), a waist-shaped step hole (101) with the lower part and the upper part being larger is formed in the right end face of the rear end face of the step bottom plate (1), two first bolts (7) are sleeved in the waist-shaped step hole (101), the screw section of each first bolt (7) penetrates through the end part of the waist-shaped step hole (101) and is inserted in a corresponding bolt through hole (601), the screw section of each first bolt (7) penetrates through the extending end of the bolt through hole (601) and is in threaded connection with a nut (8), the rear end of the step bottom plate (1) is fixed with an oil cylinder support (9), an oil cylinder (10) is fixed on the oil cylinder support (9), a pressing plate (11) is fixed on a piston rod of the oil cylinder (10), the pressing plate (11) is located right above top tables (43) of the punching assemblies (4), the front end surface of the step bottom plate (1) is used for placing strip-shaped leather (12) needing punching, and the strip-shaped leather (12) is located right below punches (41) of the punching assemblies (4); the left side wall of the step bottom plate (1) is fixed with two first support lugs (13) which are arranged in the front-back direction, a first cylinder (14) is hinged between the two first support lugs (13), the right side wall of the step bottom plate (1) is fixed with two second support lugs (15) which are arranged in the front-back direction, a second cylinder (16) is hinged between the two second support lugs (15), the lower bottom surface of the step bottom plate (1) is fixed with a first right-angle support plate (17) and a second right-angle support plate (18) which are symmetrically arranged in the left-right direction, the outer side of the first right-angle support plate (17) is provided with a 'Jiong' shaped frame (19), the right side wall of the 'Jiong' shaped frame (19) is formed with two threaded through holes (191) which are arranged in the front-back direction, and two waist-shaped grooves (171) which are extended in the vertical direction and correspond to the two threaded through holes (191) one by one are formed, a second bolt (20) is sleeved in each waist-shaped groove (171), and a screw rod section of the second bolt (20) penetrates through the end part of the waist-shaped groove (171) and is screwed in the threaded through hole (191); a first clamping plate (21) is arranged on the outer side of the Jiong-shaped frame (19), the rear end of the first clamping plate (21) is fixed on a piston rod of a double-rod cylinder (22), and the double-rod cylinder (22) is fixedly connected with the Jiong-shaped frame (19); the left end of the belt-shaped leather (12) is arranged between the clamping plate (21) and the left side wall of the Jiong-shaped frame (19) by winding the lower end of the first cylinder (14); a baffle plate (23) is fixed on the outer edge of the second right-angle support plate (18), a second clamping plate (24) is arranged on the left side of the baffle plate (23), the second clamping plate (24) is fixed on a piston rod of a second cylinder (25), and the second cylinder (25) is fixed on a vertical plate of the second right-angle support plate (18); the right end of the belt-shaped leather (12) is arranged between the second clamping plate (24) and the baffle plate (23) by bypassing the lower end of the second cylinder (16).
2. The novel equidistant punching machine for the belt-shaped leather according to claim 1 is characterized in that: a cone part (412) and a chip hole (413) with an opening at the lower side are formed at the lower end of the punch head (41), and a chip outlet hole (414) communicated with the chip hole (413) is formed in the outer wall of the punch head (41).
3. The novel equidistant punching machine for the belt-shaped leather according to claim 1 is characterized in that: a support lug (26) is fixed on the side wall of the oil cylinder support (9), a guide rod (27) is sleeved on the support lug (26), and the lower end of the guide rod (27) is fixed on the pressing plate (11).
4. The novel equidistant punching machine for the belt-shaped leather according to claim 1 is characterized in that: on the downside of banded leather (12) was equipped with nylon board (28), nylon board (28) bonded on the preceding terminal surface of step bottom plate (1), the last bottom surface of nylon board (28) is tangent with the top of second cylinder (16), the top of first cylinder (14).
5. The novel equidistant punching machine for the belt-shaped leather according to claim 1 is characterized in that: a positioning plate (29) is fixed at the lower end of the left side wall of the Jiong-shaped frame (19), the positioning plate (29) is positioned below the first clamping plate (21), and the first clamping plate (21) is pressed on the positioning plate (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254581.0A CN110894560A (en) | 2019-12-10 | 2019-12-10 | Novel equidistant punching machine for belt leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254581.0A CN110894560A (en) | 2019-12-10 | 2019-12-10 | Novel equidistant punching machine for belt leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110894560A true CN110894560A (en) | 2020-03-20 |
Family
ID=69787336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911254581.0A Withdrawn CN110894560A (en) | 2019-12-10 | 2019-12-10 | Novel equidistant punching machine for belt leather |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110894560A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112205718A (en) * | 2020-10-13 | 2021-01-12 | 姹ゆ尝 | Perforating device for shoemaking |
| CN112899414A (en) * | 2021-02-27 | 2021-06-04 | 徐�明 | Belt forming device for belt processing |
-
2019
- 2019-12-10 CN CN201911254581.0A patent/CN110894560A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112205718A (en) * | 2020-10-13 | 2021-01-12 | 姹ゆ尝 | Perforating device for shoemaking |
| CN112899414A (en) * | 2021-02-27 | 2021-06-04 | 徐�明 | Belt forming device for belt processing |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200320 |